Help me to solve this problem

[vjvijay]

I am using orcad 16 for my project.while simulation i got these errors for my ckt dig

ERROR -- Model MUR460 used by D_D2 is undefined
ERROR -- Model MUR840 used by D_D3 is undefined
ERROR -- Model MUR840 used by D_D4 is undefined
ERROR -- Subcircuit XFRM_LIN/CT-SEC used by X_TX1 is undefined
ERROR -- Subcircuit BYV27-100 used by X_D1 is undefined
ERROR -- Subcircuit IRF640 used by X_M1 is undefined
ERROR -- Subcircuit IRF640 used by X_M2 is undefined
ERROR -- Subcircuit IRF640 used by X_M3 is undefined
ERROR -- Subcircuit IRF640 used by X_M4 is undefined
ERROR -- Subcircuit IRF640 used by X_M5 is undefined

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[flatulent]

It is possible that the models are absent from the directory the program thinks the models reside.

Do a manual search for them and see where they are and copy them into the directory where D_1 model resides.

The subcircuits probably reference models internally. Search for them also.